CTM (plural CTMs)
- (intellectual property) Community Trade Mark
- (medicine) color, temperature, moisture (used to assess skin signs)
- (Canada, finance, marketing) Abbreviation of Canadian Tire Money.
- (transport) Commission de transport de Montréal — the MTC – the transit commission for the Island of Montreal; in 1970 it was replaced by the CTCUM, it replaced the MTC in 1950.